You do not state what state you are in but if you have any markets that serve other ethnicities, you may find them there. Latino, Asian and Arabic markets carry them always here in OC SoCal land.
I got my pads here. I bought the "D" grade and planted them. They grow like weeds in the summer. They will not live outside in the cold NY winters. Just bring them inside. I live in Rochester and will give you some to plant your self. I will be around Syracuse at Christmas time if that works for you.